TP53 and chordoma: Tarpey et al. [42] found 2 TP53 mutations in a study of 104 chordomas (2/90 tumors of conventional chordoma histology); only one TP53-mutated CC was identified in each of the following studies: Bai at al. [2] (1/62 conventional chordomas), Mattox et al. [25] (1/32 chordomas of unspecified histology), and Koka et al. [22] (1/51 chordomas of unspecified histology).